On 2024/1/15 11:34, Eli Zaretskii wrote: >> Date: Mon, 15 Jan 2024 10:30:26 +0800 >> Cc: 68452@debbugs.gnu.org >> From: Jinsong Zhao >> >> On 2024/1/15 0:34, Eli Zaretskii wrote: >>>> Date: Sun, 14 Jan 2024 21:52:00 +0800 >>>> From: Jinsong Zhao >>>> >>>> I am not a skilled Emacs user. I mainly use Emacs as a front end for Maxima with the help of >>>> imaxima. imaxima converts Maxima output into PNG image, which are then displayed in Emacs. I am >>>> using Windows 10. >>>> >>>> It works fine on Emacs 28.2, when I type an expression, e.g. q^2 = 1; and return, Emacs 28.2 >>>> immediately displays the resulting PNG image. >>>> >>>> If I use Emacs 29.1, however, all I get after returning is an empty square. And if I type another >>>> expression and return, a blank square appears. At the same time, the first empty square was >>>> replaced by a PNG image of the first expression. That's weird. >>>> >>>> I saw the following messages in the *Messages* buffer: >>>> >>>> Processing Maxima output...done >>>> Unable to load image (image :type png :file c:/Users/Jinso/AppData/Local/Temp/imaximatU5Y9B/1 : >>>> scale 1.001595744680851 :ascent center :mask (heuristic (color-values imaxima-bg-color)) : >>>> transform-smoothing t) [35 times] >>>> Process imaxima finished >>>> >>>> After (setq w32-use-native-image-API nil), imaxima has the same behaviour on Emacs 28.2 and >>>> 29.1. >>> >>> Thanks, but we'd need an example of such a PNG image to investigate. >>> Can you send one such image, which works with w32-use-native-image-API >>> nil, but not when it is non-nil? >>> >>> In any case, it is perfectly okay to reset w32-use-native-image-API to >>> nil if the native image APIs fail to process an image you want to see. >>> That's why we support both modes. >> >> Thanks for the reply. >> >> The PNG image is created on the fly by imaxima, a front end for Maxima. >> I think it's a normal PNG image file, actually converted from a ps file >> by ghostscript. I also tried to use JPEG, it's the same. > > Well, we cannot do anything with this bug report unless we have an > example of an image to work with. So please find a way to ask imaxima > to save the image on a file, and then send it. I could provide the PNG files, please see the attachments. File "1" and "2" are PNG files that were displayed in Emacs. File "11.png" and "33.png" are the screenshots with w32-use-native-image-API set to nil after the first and second input. File "22.png" and "44.png" are the screenshots with w32-use-native-image-API set to non-nil after the first and second input. I don't know if I am clear. Best wishes, Jinsong